Gear-shifter lever



June 3, 1930. Q HSHBURN. 1,762,132

GEAR SHIFTER LEVER Filed July 29, 1929 INVENTOR,

Otto E FAB/2.1mm

BY I

ATTORNEYS Patented June 3, I930 o'rro E. FISHBURN, or MUNOIE, momma, 'Assrcnoa moments eanacoirrenv; or

MUNGIE, INDIANA, A CO BPOR-A'Ilfilt or INDIANA GEAR-SHIFTER LEVER.

Application fileaauly 29,

My invention relates to improvements in automobile transmissions and the like and particularly to the shifting means for such transmissions.

5 structures of these devices, there are provided two or more shifter forks which are slidably mounted on or with rods and these forks engage the transmission the gears into and out of mesh. Heretofore,

there has been a certain amount of vibration set up in the shifter forks resulting in undesirable noises. I g It is one of the objects of my invention to provide means for preventing this vibration 5 in the shifter forks for rendering the same more noiseless. f

For the purpose of disclosing my invention, I have illustrated. one embodiment thereof in the accompanying drawings in which Fig. 1 is a sectional view of the shifting lever support, showing the support and forks in position; a Fig. 2 is a plan view of the shifter forks. In the embodimentillustrated, the usual transmission housingl is provided with the usual transmission gears 2. For controlling the shifting of these gears,I provideshifter forks as 3. These forks are mounted on slide members 4, in turn slidably mounted on slide rods 5 and guided by guide. rods 6'. These guide rods are preferably mounted in a top covering for the transmission box which takes the form of a dome shaped member 7 in which the shifter lever 8 is supported. The'top end of the support has an opening 9 therethrough, through which extends the'shifterlever and surrounding this opening is a spherical recess 10 adapted to receive the ball As is usualiin the commercial gearing for 'shifting.

V shoulder 11 on the lever. The lever is maintained in position by a coiled sprin 12 which is interposed be-.

lever. In order to prevent vibration onthe 1 part of the shifter forks during the operation of the engine, I provide a sleeve '17 which'is slidably mounted on the lower end of th e shifter lever 8 and which bears- 'at its lower end'on the top of the shifter fork members 1. This sleeve is provided with aninwardlyfex tending annular shoulder 18 betweenwhich,

and the shoulder 16 on the'lever, is inter posed a coiled spring 19 for biasing the'sleeve into engagement with the tops of the shifter 6. the sleeve is slidably 5 for each fork 4 may be attached to and move with its fork, sliding in suitable bearings formed in the dome 7.

I claim as my invention: 1 1. The combination with a shifter lever, of

a shifter fork having'a slottherein to receive I the end of saidlever, a sleeve slidably mount- 7 ed on the end of said lever and resilient means for. biasing said sleeve into engagement with the tOp of said fork. f i

2. The combination with a shifter fork having a slot therein to receivethe end of said lever, and means on the end p j I of said lever resiliently bearing on the top of said fork. V

.3. The combination with a shifter lever, of 51 a shifter fork having a slot therein'to receive the end'of said lever, and a vertically slidable member on said lever resiliently biased into engagement with the top of said fork.

a shifter lever, of

4. The combination with a shifter lever having an annularv shoulderat the lower end" thereof, of ashifter fork having a transverse slot for receiving the end of said lever,a ver-' tically slidable sleeve surrounding the-lower end of said lever having an inturnedannular shoulder, and a coiled spring interposed between the lever shoulder and the sleeve shoulder for maintaining the sleeve in engagement with the top of the shifter fork.

5. The combination with shifter fork sup- 7 port a shifter lever and a shifter fork havwherein the spring-actuated element is carriecl by the shifter lever.

In witness whereof, I OTTO E. FIsHBURN, have ana, this 11th day of July, A. D. one thousand nine hundred and twenty-nine.

OTTO E. FISHBURN.

hereunto set my hand at Muncie, Indi- 

